Carbureter.



No. 810,792. PATENTED JAN. 23, 1906.

' J. MOINTOSH.

GARBURETER.

APPLIUATION FILED 001 .15.1904.

WlT/VESSES: l/VVE/VTOR M ATTORNEYS UNITED s ra 'rus ra rnnr carr es,

JAMES McINTOSH, OF LANSING, MICHIGAN.

C RBURETERQ (11 whom it may concern:

B e itknown that 1, James 1\'loli\"rosI-r, a citizen of the United States, and aresident of Lansing, in the county' of Ingham'and State of 'Michigan, have-invented a new and Improved Carburetor for Hydrocarbon Engines, of

Whichthe following is a full, clear, and exact description. I

'lheinvention relates to a carburetor or vaporizer designed particularly for use in connectionwith 'internal-combustion engines, but

useful in otherconn'ections, will beajma- Trent to skilled mechanics;

- The le'adingobject of the inventionis to provide devices for automatically regulating the'actionofthe carburetor upon excessive su'cking eflorts thereim'so that whenthe engine runs at high speed the ratio of the air to may the fuel will beincreasedproportionately.

A further object of the invention is to insure a thorough spraying action of the liquid fuel, and consequently to attain a thorough adi mixture of the air andfuel.

of construction and relative arrangement of parts,'which will be fully set forth hereinafter,

and pointed out in the claims. g Reference is had to the accompanying d rawmg, forming. a part of this spec fication,

which illustrates as'an example a vertical section of' the preferred embodiment of my invention. 1

1n the drawing, indicates a hydrocarbonoil reservoir, ll-beingzthe supply-1')i pe,and 12' a drip-cock. SOClll'etlln a tubular extcnsion 145 at the bottom of the reservoir 10 is a valve seat 15, with which cooperates a ball-valvcl 6,

connected "tothe stem 17 of the float 18. The. stem 17 extends upward through the reser-? voir 10, as'usual,and the float is loose on the stem; At'its bottom the float is engaged by a spring lfil, also engaging acollar 20, faston the stem17,1and at its topthe float is engaged 'by a nutll, threaded on the stem 17. B'yia'dr ju stin'g the-single nut 21' the position-pt the float with respect to the stem may be regulated at willythe' spring holding the float snuglyagainstthe stem at all times. The float automaticallyoperating the valve 16 main tains the hydrocarbon oil at a height within "the reservoir*IO dependent upon the adjust- I Specification of Letters Patent. w Application filedoetober 15, 1904. Serial No. 228,563.

' per extren'iitv thereof. opens into the lower part of the vaporizer- -will be turned in its seat.

operates the automatic mixing-valve.

Patentedian, as, 1906.

ment otthe float, as will be fully understood. fromthe prior art.- v 22 indicates the vapoi"izercliainber, which preferably is immediately juxtaposed to the reservoir 10 and communicates therewith by way of a passage 23, leading to a vaporizernozzle 24, which opens centrally in the lower part of the vaporizer-chamher. Below the vaporizer-nozzle 24 is a strainer 25 and a plug 26, which may be of the usual or any desired construction.

In n'actice theadjustmentgof the float l8 shouh besuch as to maintain the liquid fuel in the 'nozzlell at a point level with the up An air-inlet pipe 27 chamber, and ZS-indicates a connection with the inlet-port "of the engine, the air-current passing in by the pipe 2.7 and the mixture passing to the engine by the pipe 28. The

va'porizei -chamber is fitted with a' top 29, in

which is located friction-tight the tubular stem 31) ot' agate 31 for throttling the communicationiZS. 3 Attached to said stem is an arm 32 for manually or otherwiseoperating the said gate. I A sleeve 33 is threaded within'the tubular stem '30, and threaded within said sleeve is the stem 340i the vvaporizer-valve 36 indicates a locli-nut applied to the up- "per'e'ndof the stem to hold the valve at'the desired adjustment. By this construction the valve35 maybe adjusted independently of gate 31, and'when the gate is operated to" throttle the communication 28 the valve35, being friction-tight in the sleeves 30Iand 33, This turning of the valve 35 tends to keep the valve fitted true in its seat and to remove any solid matter vthat may accumulate therein. The upper and lower parts of the vaporizer-chainber 22 are separated by an enlargement 3T, formingan airchamber lying intermediate the communications 27 and 28; Thelower side of this airchamber .has an annular seat 38, on which Said valve comprises a cylindric upper part 39,fitting normally in the intermediate part of the vaporiz'exgcasing inside of the enlargement 37.

,Thesaid cylindric part 39is provided with orilices 40, communicating with the air-belt air and fuel spray and to bringabouta thorough ad mixture of the same. Below thelcy seat 38, and from this mal.

I with a seating, as shown in lindric part 39 the automatic mixing-valve is provided with an inwardly-tapered portion 42, forminga'valve proper bearing on the portion 42 the walls of the valve curve inward and thence outward and downward to form a throat 43, encircling the nozzle 24. Said throat has in its outer side ribs .44, forming guides bearing against an annular wall formed in the vaporizer-casing 22 below'the seat 38.

46 indicates a helical spring which bears between the top of the baflie 41 and the lower end of the sleeve 33 and holdsthe automatic mixing-valve yieldingly in the position shown in the drawing. 1

The valve thus constructed is ca'pableof the drawing, so that the only passage past the valve will be through the throat 43, the air passing in the valve 37 downward below the throat, up through the throat, where it absorbs the sprayed fuel, and thence upward through the baffle 41 and out through the connection 28. At this time there is no fluid movement past the seat 38 and through the orifices 40. Should the operation cease to be normal, however, and an excessive sucking effort be exerted through the connection 28, due, for example, to excessive speed of the engine, the unusual pressure exerted on the lower side of the automatic valve will lift the same against the action of the spring 46 and force a quantity of air to pass the seat 38 into the enlargement or chamber 37, thus forming an air-belt around the valve,.the air from this belt passing in through the orifices40, so that not only isthe normal quantity of air drawn through the throat 43, but an extra quantity is supplied through the orifices 40 below the baflle 41, this extra supply mixing with the vapor already formed. A further result of this lifting of the automatic valve is that when the throat 43 is raised with respect to the nozzle 24 the daring lower end of the throat encircles the nozzle and a larger airpassage is produced past the mouth of the nozzle and Within the throat, so tha tbthe air is less rarefied at this time and less liquid is sucked from the, nozzle than when the parts are under normal operation. The instant the suction in the pipe 28 falls to normal the spring 46 will returnthe valve, and the operation of the vaporizer will again become nor- The valve 35 is fluted, corrugated, flat or angular in cross-section at a point its seat, and the stem 34 is provided deflector collar or enlargement 34 imtened, above inediately above the ribs or flutes of the valve. When, therefore, the liquid fuel is sucked from the nozzle, it is divided into a plurality of streams which pass upward, and striking the deflector 34 are thrown outward into the narrow part of the throat 43, where they encounter the inrushing current of air and are effectively charged thereby, thus forming a thorough mixture of air and fuel.

The seat of the valve is formed in the nozzle between its ends, and the fluted portion of the stem extends through the discharge portion,

and. minordetails of my invention may be resorted to at will without departing from the spirit and scope thereof; Hence I consider myself entitled to all such variations as may lie within the terms of my'claims.

Having thus desoribedmy invention, 1

claim as new Patent 1. A vaporizerhaving ali uid-fueI-SuppIy nozzle with a valve-seatintermediate its ends a throat surrounding said nozzle and adapted and desire to secure by Letters to have anair-current pass through it, said throat contracting toward the discharge end of the vaporizer, avalve coactlng with the seat in and commanding the discharge-nozzle,

and a fluted or ribbed stem extending trom the valve through the discharge portion of the seat, for the purpose specified.

i 2. A vaporizer having a valve to throttle the mixture passing from the vaporizer, a

liquid-fuel-supply nozzle, a spraying-valve coacting therewith,and a connection between the two valves to turn the latter upon turning the former. r

3. A vaporizer havingaliguid-fuel-supply nozzle, a throat surrounding said nozzle and adapted to have an air-current pass through it, said throat contracting toward the discharge end of the vaporizer, avalve compurpose specified, and said stem havingade -flector collar or' enlargement above its said ribs and within the throat.

4. A vaporizer comprising a casing having inlet and outletjorifies respectively for the air I and mixture, a liquid-fuel-supply nozzle lead-. ing into the casingintermediate said inlet and outlet orifices,'and an automatic mixing-valve .manding the discharge-nozzle, a fluted or-, 'ribbed stem extending from the valve for the comprising a throat surrouiidiiigthe. nozzle, a

yieldingly seated valve proper-- above the throat, and anannular proper. I

5. A'vaporizer comprising a casing having inlet and outlet orifices respectively for the air and mixture, a liquid-fuel-supply nozzle leading into the casing intermediate said inlet and outlet orifices, an automatic mixing-valve comprising a throat surrounding the nozzle, a yieldingly seated valve properabove the throat, and a wall rising from the valve proper, the casinghaving walls forming an air-chamber surrounding the'said wall of the valve, and the said wall of the valve being orificed to communicate with said air-chamber for the purpose specified.

6. A vaporizer comprising a casing having inlet and outlet orifices respectively for the air and mixture, 9. liquid-supply nozzle leading baffle above said valve l let orifices, an automatic mixing-valve comprising a throat surrounding the nozzle, a

yieldingly seated valve proper above the throat, and a wallrising from the valve proper, the casing having walls forming an air-chamber surrounding the said wall of the valve, and the said wall of the valve being orificed to communicate with said chamber for the purpose specified, and an annular interior baflle extending around the said wall of the valve above 7. A vaporizer comprising a casing having inlet and outlet orifices respectively for the air and mixture and also having a valve-seat and walls forming an air-chamber above the seat, a supply-nozzle extending into the vaporizer intermediate said inlet and outlet orifices, an automatic mixing-valve located in the casing and com prising a throat surrounding the nozzle, a valve proper above the throat and hearing on the said seat, and a'wall rising from the valve proper and lying opposite the air-chamber inthe casing, said wall of the valve being orificed opposite the air-belt for the purpose specified.

8. A vaporizer comprising a casing having inlet and outlet orifices respectively for the air and mixture and also having a valve-seat and walls forming an air-chamber above the seat, a supply-nozzle extending into the vaporizer intermediate said inlet and outlet orifices, an automatic mixing-valve located in the casing and comprising a throat surrounding the nozzle, a valve proper above the throat and bearing on the said seat, and a wall rising from the valve proper and lying opposite the air-chamber in the casing, said wall of the valve being" orificed opposite the air-chamber for the purpose specified, and an annular interior bafile carried by said wall of the valve above the orilice therein.

9. A vaporizer having a liquid-t'ucl-supply nozzle, a throat surrounding said nozzle and adapted to have an air-current pass through it, said throat contracting toward the discharge end of the vaporizer, and the liqrnd-fuel nozzlc having a valve-seat therein. intermediate its ends;a valve coacting with said seat, a stem connected to the valve and having a liuted or ribbed portion directly adjacent thereto, said fluted or ribbed portion extemling through the discharge portion of the nozzle, and a de- Hector carried by the stem opposite the said nozzle and within the throat.

10. A vaporizer comprising a casing having inlet and outlet orifices, a seat located intermediate the orilices, walls forming an airchamber adjacent to the seat, a liquid-supply nozzle leading into the casing, an automatic mixing-valve comprising a normally opened throat, a valve proper coacting with the seat of the casing, and an upwardly-extending wall lying opposite said air-chamber and formed with an orifice therein.

11. A vaporizer comprising a casing having inlet and 'outlet orifices, a seat located intermediate the orifices, walls forming an airchamber adjacent to the seat, a liquid-supply nozzle'leading into the casing, an automatic mixing-valve comprising a normally opened threat, a valve proper coacting with the seat of the casing, an upwardly-extending wall lying opposite said air-chamber and formed with an orifice therein, and an inwardly-extending annular baflie carried by said wall of the mix-' ing-valve above the orifice therein.

12. A vaporizer comprising a casing having inlet and outlet orifices respectively for the arr and mixture, a liquid-supply nozzle leading into the casing intermediate said inlet and outlet orifices, anau tomat1c mixing-valve controlling an auxiliary air-supply, a valve to throttle the mixture passing-from the vaporizer, a tubular stem for operating the valve, a valve commandingthe liquid-supply nozzle, 2.

spring engaging the automatic mixing-valve,

a tube threaded in the tubular stem of the throttle-valve, and a stem attached to the supa ply-nozzle valve and threaded in the tube.

13. -A vaporizer having a casing with inlet and outlet orifices respectively for the air and I mixture, said casing having a seat between said orifices and walls forming an airchamber above the seat, a liquid-supply nozzle leading to the casing intermediate the inlet and outlet or1ficcs,an automatic mixing-valve comprising a throat adjacent to the supply-nozzle, a valve proper at the upper end of the throat, the

valve proper coacting with the end of the seat of thecasing, 'a wall extending upward from the valve proper and lying opposite said airchamber of the casing, the wall having a perforation therein communicating wlth the airchamber, and means for yleldmgly seating the automatic mixing-valve.

14. A vaporizer,comprisingacasing having inlet and outlet orifices respectively for the air and mixture, at liquid-fuel supply entering the casing intermediate said inlet and outlet; the casing having a valve-seat between the fuel supply. and mixture outlet, an air-chamber between the valvel-seat and mixture-outlet, and a yieldingly-sated n'lixing-valve adapted to be opened by the fluid current through the casing, said valve acting with said seat and having an oriliccd wall extending over the airchamber.

15. A vaporizer,comprisingacasinghaving inlet and outlet orifices respectively for the air and mixture, a liquid-fuel supply entering the casing intermediate said inlet and outlet, the casing having a valve seat between the fuel supply and mixture outlet, an annular air.

chamber.between the valve-seat and mixtureoutlet, and a yreldmgly-seated mixing-valve adapted to be opened by the fluid current through the casing, said valve acting with said seat and having an orificed wall ex tendin'g over the air-chamber.

' casing intermediatesaid inlet and outlet, [the casing having a valve seat between thefuel,

supply and mixture outlet, an air-chamber between the valve-seat and mixture-outlet. a

- yieldingly-seated mixing-valve adapted to be opened by the fluid current through the-c'asln'g, said Valve acting with said seat and havlngnn orificed \vall extending ov-er the airchamber, and an inwardly l extending bafiie carried by the wall between the orifice thereof and the mixture-outlet.

In testin'iony whereofIhave signed my name I 5 to thi's specification inthe presence of the subscribing witnessesr JAMES MGINTOSH. Witnesses: i

GEO. L. HAWN,

GEORGE R. HECK, EDNA B. SPINDLER. 

